參數資料
型號: IBM3209K3114
廠商: IBM Microeletronics
英文描述: IBM Packet Routing Switch Serial Interface Converter(IBM封裝路線選擇開關串行接口轉換器)
中文描述: IBM的分組路由交換機串行接口轉換器(IBM的封裝路線選擇開關串行接口轉換器)
文件頁數: 37/152頁
文件大?。?/td> 2390K
代理商: IBM3209K3114
IBM3209K3114
Advance
IBM Packet Routing Switch Serial Interface Converter
prssi.01
July 12, 2000
Functional Description
Page 27 of 142
The EDI GRANT extraction mechanism is synchronized on the incoming idle packet grant flywheel counter.
When a desynchronization problem is detected between the switch counter and the EDI grant flywheel
counter, an error is reported and the EDI flywheel counter is automatically resynchronized. In order to mini-
mize the latency of the switch Grant mechanism, the Grant vector is extracted before the completion of the
packet reception.
The EDI performs switch memory grant synchronization. Memory Grant information and Destination Grant
Vectors are passed to the in band grant generation block for insertion into the egress packets. The EDI is also
the protocol engine interface wrap point.
EDI functions:
Detect idle packets received from the switch
Synchronize on switch Output Queue Grant counter
Output Queue Grant Extraction (one to four priorities traffic)
Yellow Packet Received Indication (Maskable error Interruption)
LU CRC checking (Maskable error interruption)
Header Parity checking (Maskable error interruption) with optional discard
Data Packet Received Detection
Wrap Indication Input line (Grant Indication Bypass)
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